Running races in or near Arnold, MO
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Arnold, MO area. Races listed here include both walking and running events of various distances — from 1-milers, to 5Ks, to marathons, and everything else in between.
Puzzle Palooza: May the Pieces be with You!
Organization: City of Belleville
Date of Race: 05-04-2026
Description: DescriptionUse The Force to be the first team to complete their ...
View Race Details View on Map
Puzzle Palooza: Lucky Pieces
Organization: City of Belleville
Date of Race: 03-13-2026
Description: DescriptionChannel the luck o' the Irish in our early puzzle palooza ...
View Race Details View on Map
2026 Tu-Tu 2.2 Fun Run
Organization: City of Belleville
Date of Race: 02-22-2026
Description: DescriptionCalling all runners! Join us on 2/22 at 2:22 for our ...
View Race Details View on Map
Feb 2026 Senior's Puzzle Palooza: A Match Made ...
Organization: City of Belleville
Date of Race: 02-11-2026
Description: DescriptionA special edition of Puzzle Palooza just for our Seniors! Join ...
View Race Details View on Map
2026 Egg Dye & Tie Dye Party
Organization: City of Belleville
Date of Race: 03-25-2026
Description: DescriptionCome out to Bellevue Park Stone Lodge and join the fun! ...
View Race Details View on Map
2026 Sunday, Sundae Sprint 1-Mile Fun Run
Organization: City of Belleville
Date of Race: 07-19-2026
Description: DescriptionCalling all runners! Join us for a 1-mile fun run for ...
View Race Details View on Map
Birthday 5K
Organization: Fairview Heights Parks and Recreation
Date of Race: 05-02-2026
Description: DescriptionOur annual 5k is back with a brand new route, medals ...
View Race Details View on Map
Seniors - The Amazing Race: Camp Edition
Organization: The Wilson School
Date of Race: 06-22-2026
Description: DescriptionOur annual 5k is back with a brand new route, medals ...
View Race Details View on Map
Seniors - The Amazing Race: Camp Edition
Organization: The Wilson School
Date of Race: 06-29-2026
Description: DescriptionOur annual 5k is back with a brand new route, medals ...
View Race Details View on Map
Doggy 'Egg' Hunt
Organization: Fairview Heights Parks and Recreation
Date of Race: 03-21-2026
Description: Description Doggy "Egg" HuntYour dog ...
View Race Details View on Map
Doggy 'Egg' Hunt
Organization: Fairview Heights Parks and Recreation
Date of Race: 03-21-2026
Description: Description Doggy "Egg" HuntYour dog ...
View Race Details View on Map
Doggy 'Egg' Hunt
Organization: Fairview Heights Parks and Recreation
Date of Race: 03-21-2026
Description: Description Doggy "Egg" HuntYour dog ...
View Race Details View on Map
Complete list of running events in and near Arnold, MO: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Arnold
About Arnold
Arnold (MO) is a city in Jefferson County with an estimated population of 20,808.[4]
Races Local Newsletter
Subscribe to get the latest on racing delivered to your inbox, once per week.
Did you know?
The number of U.S. marathon finishers declined from 2014 to 2015 approximately 8 percent.
